Adaptors used for both IPTV and Internet

jmizoguchi wrote:
Power line device must be behind the router so not sure when you say IPTV goes to socket which means without the router then will not work.

Maybe I should clarify the setup a bit:
Within the flat, there are two ISP sockets with an RJ45 input.
To connect my double play service, all I need is activation of these two sockets. Then the ISP provides an IPTV tuner and that is it.
In principle, without any additional equipment:
Room 1 ISP socket with CAT cable to IPTV tuner gives me IPTV in the living room.
What I did to get rid of the cable between the two rooms - I plugged a XAV5601 to the mains and connected the ISP socket to the GiGe Port. Then in the living room, second XAVB5601 with RJ45 cable then connected to the IPTV Tuner. No router between the ISP socket and the powerline adaptor and it works fine.

Room 2 ISP socket with CAT cable gives me a L2TP-based Internet connection.
All I have done here is install a typical ASUS RTN56U router.